Graphite isn't going to heat up and stick to your glass but it will eventually start to degrade around the edges and is more prone to damage than brass. Graphite is wayyy less expensive than brass. However, if you're not doing production work, I'd go with graphite. I have graphite I've used for almost a decade, doing occasional torching, that's almost as good as new.
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ESC
Soft glass on a Minor/concentrator since 1996
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